Disclaimer!

FatDBA or Oracle ‘Ant’ is an independent web-blog/site.The experiences, Test cases, views, and opinions expressed in this website are my own and does not reflect the views or opinions of my employer.

This site is independent of and does not represent Oracle Corporation in any way. Oracle does not officially sponsor, approve, or endorse this site or its content.
Product and company names mentioned in this website may be the trademarks of their respective owners.

Data Guard – Adding and Resizing a datafile on the Primary database

Standby Database (Data Guard) is slowly and steadily turning out to be my best topic/subject among others in High Availability. It attracts me to experiment to improve the HA features.

Alright, today I’ve fixed one of the problem i was facing from past few days and discovered that i was doing a stupid mistake and that i failed to catch too till the moment i rechecked some parameters in initialization file minute ago.

I tried to add/modify some data files and was not getting at the Standby End which resulted in several errors at Sb DB and lead to Standby Database crash. Otherwise i have to manual port log files from primary destination to the Standby party to maintain the sync between the two after datafiles addition.

Below were the error messages i was getting when tested the standby status:

Solution:
I’ve check and found Standby_File_Management was set to ‘MANUAL’
and both the db_file_name_convert and log_file_name_conver were different.

I’ve set all the three parameters to below provided valuesStandby_File_Management=AUTO (Both on Primary and Standby)db_file_name_convert ( I’ve left it unchanged on both sides – it was empty (default))log_file_name_convert ( I’ve left it unchanged on both sides – it was empty (default))

Snippets from my machine:
SQL> show parameter standby_file_management (On both Primary and Standby)